Chimney, cowl, or ventilating appliance.



F. E. MOSS.

GHIMNEY, COWL, 0B VENTILATING APPLIANCE.

APPLICATION FILED IAY2I| I9]?- Patented Feb. 26, 1918.

2 SHEETS-SHEET I.

Inueni'or F16 M086- F. E. MOSS.

CHIMNEY, COWL, 0B VENTILAHNG APPLIANCE.

APPLICATION FILED MAYZI, 1917.

1,257,291 6. Patented Feb. 26, 1918.

2 shinssum 2.

FRANCIS EVANIVIOSS, OF WORTHINGTON, NEAR WIGAN, ENGLAND.

I CHIMNEY, COWL, OR VENTILATING APPLIANCE.

Specification of Letters Patent. i Patented Feb. 26, 1918.

Applicationfiled May 21, 1917. Serial No. 170,030.

To all whom it may concern:

Be it known that I, FRANCIS EVAN Moss, a subject of the King of England, residing at Worthington, near \Vigan, in the county of Lancaster, England, have invented new and useful Improvements in Chimneys, Cowls, or Ventilating Appliances, of which the following is a specification.

This invention has reference to chimney pots, cowls, or ventilators such as are used on tops of chimneys on ventilating conduits, roofs or other parts of buildings, and the like.

The chimney pot, cowl, or ventilator, comprises two parts, an inner part constituting a tube or conduit having a multiplicity of sets of apertures in its sides, and inwardly projecting devices opposite them; and an outer part-which is preferably imperforate; the two parts having an annular space between them, open at each end. The outer tube forms an annular wall or shield to the openings referred to, so that the wind in striking the cowl or chimney as the case may be, will pass up into the annular passage the lower part of which is preferably bell mouthed or of cowl form so as to collect and direct the air-and will pass through the openings in the inner conduit, being directed by the inclined and upwardly projecting plates or parts within the openings, in an upward central direction, so promoting the flow of smoke, air or gas, as the case may be, which is passing up, or it is desired to move up the chimney, tube, or space on which the lower end or part of the cowl, chimney or the like is placed.

By this construction of chimney pot, cowl, or ventilator, an effective exhausting or air or gas extracting effectis promoted or ob tained, and back drafts are obviated.

The outer conduit can be supported from the inner part by radial webs extending between them; and the annular passage at the bottom m v be c m letely op n, or partially closed and provided with holes or slots for the entrance of air.

The pot, ventilator, or cowl may be formed of earthenware, metal, or any suitable material.

The chimney pot, cowl, or ventilator constructed as above described is shown in the accompanying drawing, in which Fig ure 1 is a vertical section, Fig. 2 a crom section, Fig. 3 is a section and Fig. 4 a plan, showing a modification.

Referring now to the drawings, a represents the inner tube or part, b a multiplicity of apertures in it, and 0 the inwardly projecting devices on the inside of the apertures I). (Z represents the outer part, and e is the annular space between them; the outer part 03 in the case shown being flared outward at f, so that the opening 9 below between it and the conduit a is bell-mouthed.

The outer conduit d is carried from the inner one by radial webs h, which extend up from below it to the upper part.

The devices 0, as shown, are inclined from their lower part upward toward the axis of the cowl or chimney pot; and they are closed at the sides, and only open at the top; the holes 79 and devices 0 are in plurality and set one over the other; and in the case shown, a set of them is provided in connection with each portion of the annular space 6, between each pair of adjacent radial divisions or webs h.

When the wind comes from a certain quarter, it will enter the opening 9 on the side of the cowl toward which the wind is blowing, and it will pass up the segments of the annular space 6, which are open or subject to the wind; and the upfiow through the openings 3) from the space 6, will enter the tube a in an oblique direction, being directed by the devices 0, and produce an up draft in the conduit a.

What is claimed is 1. A ventilator comprising an outer casing, an inner casing spaced from the outer casing, the bottoms of the two casings flaring outwardly, ribs extending throughout the space between and connecting the inner and outer casings to form vertical fiues open at the top and bottom, the inner casing being provided with a plurality of super posed openings which form communication between the respective flues and the interior of the inner casing, each opening being surrounded by side walls and an upwardly inclined inner wall to direct the draft upwardly toward the center of the inner casing.

2. A ventilator comprising an inner casing and a spaced-outer casing integral with the inner casing, the bottoms of the two ms ings flaring outwardly, integral ribs connecting the inner and outer casing and extending throughout the length thereof to form fiues open at the top and bottom, the inner casing having formed therewith aplurality of superposed inwardly extended pockets open at the top and communicating with the flues, the inner surfaces of the pockets being upwardly inclined to direct the draft upwardly toward the center of the inner casing.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANCIS EVAN MOSS.

Witnesses:

SOMERVILL GooDALL, PERCY HUBBARD.

009k: a! this patent my be obtained for he cent: each, by addressing the Commluloner of Patents,

Washington, D. 0. 

